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Enzymatically-degradable hydrogel coatings on titanium for bacterial infection inhibition and enhanced soft tissue compatibility via a self-adaptive strategy

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Bioactive materials 2021年第12期6卷 4670-4685页

作者： Jin Leng Ye He Zhang Yuan Bailong Tao Ke Li Chuanchuan Lin Kun Xu Maowen Chen Liangliang Dai Xuemin Li Tony Jun Huang Kaiyong Cai Key Laboratory of Biorheological Science and Technology Ministry of EducationCollege of BioengineeringChongqing UniversityChongqing400044China Thomas Lord Department of Mechanical Engineering&Materials Science Duke UniversityDurhamNC27708USA Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing Southwest UniversityChongqing400715China Institute of Medical Research Northwestern Polytechnical UniversityXi’an 710072China Innovative Drug Research Centre School of Pharmaceutical SciencesChongqing UniversityChongqing401331China

Ideal percutaneous titanium implants request both antibacterial ability and soft tissue *** structure constructed on titanium has been widely proved to be helpful to combat pathogen contamination,but the biosafety of ZnO is always *** to maintain the remarkable antibacterial ability of ZnO and efficiently reduce the corresponding toxicity is still ***,a hybrid hydrogel coating was constructed on the fabricated ZnO structure of titanium,and the coating was proved to be enzymatically-degradable when bacteria *** the antibacterial activity of ZnO was *** under the normal condition(no bacteria),the hydrogel coating was stable and tightly adhered to *** toxicity of ZnO was reduced,and the viability of fibroblasts was largely *** importantly,the hydrogel coating provided a good buffer zone for cell ingrowth and soft tissue *** curbed Zn ion release was also proved to be useful to regulate fibroblast responses such as the expression of CTGF and *** results were also validated by in vivo ***,this study proposed a valid self-adaptive strategy for ZnO *** different conditions,the sample could present different functions,and both the antibacterial ability and soft tissue compatibility were finely preserved.

关键词： Titanium ZnO Hydrogel coatings Anti-bacteria Fibroblasts Soft tissue compatibility

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No external load measurement strategy for micro thermoelectric generator based on high-performance Si_(1-x-y)Ge_(x)Sn_(y) film

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Journal of Materiomics 2021年第4期7卷 665-671页

作者： Ying Peng Sijing Zhu Huajun Lai Jie Gao Masashi Kurosawa Osamu Nakatsuka Sakae Tanemura Biaolin Peng Lei Miao Guangxi Key Laboratory of Information Material School of Material Science and EngineeringGuilin University of Electronic TechnologyGuilin541004China Department of Materials Physics Graduate School of EngineeringNagoya UniversityNagoya464-8603Japan PRESTO Japan Science and Technology Agency4-1-8HonchoKawaguchiSaitama332-0012Japan Institute of Materials and Systems for Sustainability Nagoya UniversityNagoya464-8601Japan Japan Fine Ceramics Center 2-4-1 MutsunoAtsuta-kuNagoya456-8587Japan Center on Nanoenergy Research Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured MaterialsGuangxi Key Laboratory for Relativity AstrophysicsNanning530004China Department of Materials Science and Engineering SIT Research LaboratoriesInnovative Global ProgramFaculty of EngineeringShibaura Institute of TechnologyTokyo135-8548Japan

In this study,a micro in-plane p-type thermoelectric generator(TEG),which consists of thin-film Si_(1-x-y)Ge_(x)Sn_(y) ternary alloy semiconductor on insulator,is developed to make efficient use of waste heat such as human body.A power factor value as high as 1095 mWm^(-1) K^(-2) had been achieved using Bion implanted and short-term rapid thermal annealing(RTA)*** addition,a measuring scheme for micro TEG without external load resistance was *** one measuring session,multiple parameters can be *** micro single-arm TEG prepared by semiconductor process can output 0.29 nW power at a temperature difference of 15 K,and a cross-sectional power density has reached up to 0.58 mW/cm^(2),which is a superior value for wearable *** findings of this study have important reference value for wearable device performance improvement and output power measuring of micro TEG.

关键词： Si_(1-x-y)Ge_(x)Sn_(y) film P-type TEG No external load measurement Ambient power density

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Cetyl Trimethyl Ammonium Bromide Expanded Nizn-Layered Double Hydroxide with Improved Lithium Storage Property

SSRN

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SSRN 2023年

作者： Luo, Kang Li, Yanwei Yao, Jinhuan Zhang, Jianeng Xu, Wenhan Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials College of Chemistry and Bioengineering Guilin University of Technology Guilin541004 China Key Laboratory of New Processing Technology for Nonferrous Metal & Materials Ministry of Education College of Material Science and Engineering Guilin University of Technology Guilin541004 China School of Petrochemical Engineering Liaoning Petrochemical University Fushun113001 China

The investigation and development of novel and alternative nickel-based anode materials hold paramount importance in overcoming their inherent drawbacks, including inadequate conductivity, low rate capability, and poor cycling durability, for their effective utilization in lithium-ion batteries (LIBs). Herein, we prepare cetyl trimethyl ammonium bromide (CTAB) inserted Ni-Zn-LDH (NZH) using a facile hydrothermal approach. The physical characterization tests reveal that the incorporation of CTAB into the NZH layer results in a substantial expansion of the interlayer spacing and a more homogeneous formation of nanosheets. In addition, the Ni-Zn-LDH-CTAB (NZH-C) exhibits 828.8 mA h g-1 after 200 cycles at 0.5 A g-1 while maintaining a reversible specific capacity of 527.8 mA h g-1 at 3 A g-1. At the same time, it shows an obvious pseudocapacitance effect (at 1.0 m V s-1, the pseudocapacitance contribution rate was 76.6%). EIS tests show that CTAB insertion into the interlayer of NZH significantly reduces the electrochemical impedance value of the material and exhibits better reaction kinetics. The present work presents a novel strategy to regulate the interlayer structure and optimize the energy storage capacity of nickel-based hydroxide anode materials, thereby contributing to developing high-performance energy storage systems. © 2023, The Authors. All rights reserved.

关键词： Anodes

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Amelioration of imiquimod-induced psoriasis-like dermatitis in mice by DSW therapy inspired hydrogel

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Bioactive materials 2021年第2期6卷 299-311页

作者： Xiang He Bing Zhu WeiJia Xie Yu He Jian Song Yi Zhang Chi Sun Hao Li QiYu Tang XinXin Sun Yanni Tan Yong Liu State Key Laboratory of Powder Metallurgy Central South UniversityChangsha410083China School of Materials Science and Engineering Central South UniversityChangsha410083China Xiangya School of Medicine Central South UniversityChangsha410083China Department of Material and Chemical Engineering Zhengzhou University of Light IndustryZhengzhou450002China Department of Mechanical Engineering Munich School of BioengineeringTechnical University of Munich85748GarchingGermany Changchun Institute of Applied Chemistry Chinese Academy of SciencesChangchun130022China Center for Medical Genetics Hunan Key Laboratory of Medical GeneticsSchool of Life SciencesCentral South UniversityChangsha410083China A.James Clark School of Engineering University of MarylandCollege Park20742MDUnited States

Psoriasis is a long-lasting and recurrent autoimmune disease which is incurable so *** Sea water(DSW)therapy is an effective approach to help control the symptoms of psoriasis due to the abundant mineral ions in DSW,which inspired the material formulation in this ***–Sodium alginate/Polyacrylamide hydrogels(Rb-SA/PAAm gels)composed of sodium alginate and polyacrylamide interpenetrating network structure with different concentrations of rubidium and certain magnesium and zinc content were prepared for the treatment of *** obtained results suggest the good mechanical properties of the Rb-SA/PAAm gels including toughness and swelling *** terms of in vitro tests,the Rb-SA/PAAm gels not only show nontoxicity to human keratinocyte cell line(Hacats)but also inhibits the activity against inflammatory NF-κβ signaling ***,they can release Rb+which enable the Rb-SA/PAAm gels have better antibacterial ability to Streptococcus and Escherichia *** results obtained from in vivo tests indicate that these hydrogels could alleviate the symptoms of psoriasis caused by Imiquimod(IMQ)in mice by reducing the inflammatory factor in STAT3 pathway and therefore reduce the immune stimulation of the *** conclusion,the 100Rb-SA/PAAm gel has demonstrated great potential to be a topical wettable dressing for psoriasis treatment.

关键词： DSW therapy Rubidium Hydrogels Imiquimod Psoriasis

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Effect of pyrolysis temperature on characteristics of tunable magnetic biochar synthesized from watermelon rind and its tetracycline adsorption performance

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Journal of the Taiwan Institute of Chemical Engineers 2024年 160卷

作者： Thairattananon, Phisit Le, Giang T.T. Matsumura, Yukihiko Wu, Kevin C.W. Charinpanitkul, Tawatchai Department of Chemical Engineering Faculty of Engineering Center of Excellence in Particle and Material Processing Technology Chulalongkorn University Bangkok10330 Thailand Institute of Fundamental and Applied Sciences Duy Tan University Ho Chi Minh700000 Viet Nam Faculty of Environmental and Chemical Engineering Duy Tan University Da Nang550000 Viet Nam Mechanical Engineering Program Graduate School of Advanced Science and Engineering Kagamiyama Hiroshima Higashi-Hiroshima739-8527 Japan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering and Materials Science Yuan Ze University Chung-Li Taoyuan Taiwan Research Network of NANOTEC-KU on Nanocatalyst and Nanomaterials for Sustainable Energy and Environment Bangkok10900 Thailand

Background: Tetracycline is an emerging contaminant in water reservoirs, causing undesirable influences on human society. The promising usage of magnetic biochar (MBC) derived from watermelon rind has been explored in the adsorption of various contaminants owing to its high specific surface area and separability;however, the temperature-dependent changes of MBC and its sorption ability toward antibiotics have not been widely examined. Method: Tunable MBCs could be synthesized via simple pyrolysis of watermelon rind impregnated with FeCl3 at different temperatures (700–900 °C). The as-synthesized MBCs were characterized using scanning electron microscopy (SEM), an elemental analyzer, N2 adsorption/desorption, Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffractometry (XRD), and vibrating sample magnetometry (VSM). Then Tetracycline, an emerging contaminant in water reservoirs, was employed as the target contaminant, while adsorption kinetics, isotherm, the effect of pH, and reusability were investigated. Significant findings: The tunability of as-synthesized MBCs could be observed by their distinct changes in structural characteristics when varying pyrolysis temperature. MBC synthesized at 900 °C (MBC900) possessed a high-specific surface area (401 m2.g−1) and saturation magnetization (55.29 emu.g−1), resulting in a greater amount of sorption sites. Tetracycline adsorption by MBCs followed a pseudo-second-order kinetic model and fitted well with the Freundlich model. MBC900 is an excellent adsorbent with a maximum adsorption capacity of 77.6 mg.g−1 and could be used for at least five cycles with an insignificant decrease in the adsorption capacity. © 2024 Taiwan Institute of Chemical Engineers

关键词： Adsorption

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Santa Fe Oxa: Self-Assembled Oxaliplatin Nanomicelle for Enhanced Cascade Cancer Chemotherapy Via Self-Sensitized Ferroptosis

SSRN

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SSRN 2024年

作者： Shi, Jianbin Ma, Wenjing Zheng, Shunzhe Xia, Fengli Liu, Xinying Kikkawa, Ayumi Tanaka, Kaho Kamei, Ken-Ichiro Tian, Chutong Department of Pharmaceutics Wuya College of Innovation Shenyang Pharmaceutical University Shenyang110016 China Kyoto University Kyoto606-8501 Japan Program of Biology Division of Science New York University Abu Dhabi Abu Dhabi United Arab Emirates Program of Bioengineering Division of Engineering New York University Abu Dhabi Abu Dhabi United Arab Emirates Department of Biomedical Engineering Tandon School of Engineering New York University MetroTech BrooklynNY11201 United States Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province Hangzhou310058 China

The clinical utility of chemotherapy is often compromised by its limited efficacy and significant side effects. Addressing these concerns, we develop a self-assembled nanomicelle, namely SANTA FE OXA, which is composed of hyaluronic acid (HA) conjugated with ferrocene methanol (FC-OH), oxaliplatin prodrug (OXA(Ⅳ)) and glycol-coupled linoleic acid (EG-LA). Targeted delivery is achieved as HA binds to the CD44 receptors that are overexpressed on tumor cells, facilitating drug uptake. Once internalized, hyaluronidase (HAase) catalyzes the digestions of the SANTA FE OXA, releasing FC and reducing OXA(Ⅳ) into an active form. Active OXA induces DNA damage, while simultaneously promoting intracellular hydrogen peroxide levels via cascade reactions. In parallel, FC disrupts the redox balance within tumor cells, inducing ferroptosis. The synergistic combination of cascade chemotherapy and self-sensitized ferroptosis therapy has demonstrated remarkable anti-cancer efficacy in both in vitro and in vivo models. Moreover, this SANTA FE OXA significantly mitigates the systemic toxicity commonly associated with platinum-based chemotherapeutics. Our findings suggest a compelling advancement in nanomedicine for enhanced cascade cancer therapy. © 2024, The Authors. All rights reserved.

关键词： Chemotherapy

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Tailoring the morphological, optical, electrical, and random lasing properties of ZnO nanorods synthesized on metal surfaces for biosensor applications

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Optik 2024年 315卷

作者： Abdulhameed, Abdullah Halim, Mohd Mahadi Drmosh, Qasem Ahmed Mahnashi, Yaqub Wan Ahmad Kamil, Wan Maryam Azmi, Atiqah Nabieha Center for Communication Systems and Sensing King Fahd University of Petroleum & Minerals Dhahran31261 Saudi Arabia School of Physics Universiti Sains Malaysia Penang 11800 Malaysia Material Science and Engineering Department King Fahd University of Petroleum & Minerals Dhahran31261 Saudi Arabia Center for Hydrogen and Energy Storage King Fahd University of Petroleum & Minerals Dhahran31261 Saudi Arabia Electrical Engineering Department King Fahd University of Petroleum & Minerals Dhahran31261 Saudi Arabia Bioengineering Department King Fahd University of Petroleum & Minerals Dhahran31261 Saudi Arabia

Laser-based sensors are taking over their counterparts, fluorescence-based sensors, in the field of bioengineering and space communication due to their high amplification, narrow emission beam, low signal-to-noise ratio, and nonlinearity. In this work, we investigated the chemical growth of ZnO nanorods on different metal surfaces (Au, Pt, Ti, and Al) to serve as random laser mediums. Different analytical techniques were used to investigate the optical, electrical, and morphological properties of the fabricated devices. A lasing threshold of 27.68 mJ/cm² with a spectral width of 2.18 nm centered at 385.06 nm is observed when Ti is used as the growth surface. Al surface produces ZnO nanorods with a lasing threshold of 24.21 mJ/cm² and a spectral width of 1.81 nm. Growing ZnO nanorods on metal surfaces using the chemical bath deposition method paves the way for fabricating different random lasing-based biosensors. © 2024 Elsevier GmbH

关键词： Zinc oxide

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Magnetochiral Tunneling in Paramagnetic Co1/3NbS2

arXiv

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arXiv 2024年

作者： Lim, Seongjoon Singh, Sobhit Huang, Fei-Ting Pan, Shangke Wang, Kefeng Kim, Jaewook Kim, Jinwoong Vanderbilt, David Cheong, Sang-Wook Rutgers Center for Emergent Materials Department of Physics and Astronomy PiscatawayNJ08854 United States Department of Mechanical Engineering University of Rochester RochesterNY14627 United States Materials Science Program University of Rochester RochesterNY14627 United States State Key Laboratory Base of Novel Function Materials and Preparation Science School of Material Sciences and Chemical Engineering Ningbo University Zhejiang Ningbo315211 China Department of Physics and Astronomy Rutgers University PiscatawayNJ08854 United States

Electric currents have the intriguing ability to induce magnetization in nonmagnetic crystals with sufficiently low crystallographic symmetry. Some associated phenomena include the non-linear anomalous Hall effect in polar crystals and the nonreciprocal directional dichroism in chiral crystals when magnetic fields are applied. In this work, we demonstrate that the same underlying physics is also manifested in the electronic tunneling process between the surface of a nonmagnetic chiral material and a magnetized scanning probe. In the paramagnetic but chiral metallic compound Co1/3NbS2, the magnetization induced by the tunneling current is shown to become detectable by its coupling to the magnetization of the tip itself. This results in a contrast across different chiral domains, achieving atomic-scale spatial resolution of structural chirality. To support the proposed mechanism, we used first-principles theory to compute the chirality-dependent current-induced magnetization and Berry curvature in the bulk of the material. Our demonstration of this magnetochiral tunneling effect opens up a new avenue for investigating atomic-scale variations in the local crystallographic symmetry and electronic structure across the structural domain boundaries of low-symmetry nonmagnetic crystals. © 2024, CC BY.

关键词： Magnetization

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Complementing Cross Methodology with Human Centered Design Approach: Application in the Development of an Assistive Device

SSRN

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SSRN 2024年

作者： Posada-Borrero, Ana María Salazar-Salgado, Sara Escobar-Saltaren, Daniel Cuartas-Escobar, Simon Calderón, Luz Angela Henao, Sofía Catalina Prótesis Avanzadas S.A.S. Medellín Colombia Bioinstrumentation and Clinical Engineering Research Group Bioengineering Department Engineering Faculty Universidad de Antioquia Medellín Colombia Hospital San Vicente Fundación. Medellín Colombia Grupo de Rehabilitación en Salud School of Medicine Universidad de Antioquia Medellín Colombia Grupo de Automática y Robótica Mechanical Engineering Program Engineering and Science Faculty Pontificia Universidad Javeriana Cali Colombia

Conventional methodologies often fall short in accommodating the unique requirements of assistive devices, which intimately interact with the human body. To address these intricacies, this paper presents an innovative framework that combines Nigel Cross' methodology with Human-Centered Design. This integration enriches the design process by infusing empathy, user involvement, and iterative *** promising, the paper acknowledges limitations, including its application to a single case study of an upper limb prosthesis and the challenges of adapting the methodology to products of varying complexity. In essence, this paper contributes a holistic methodology that addresses the unique challenges of designing assistive devices, fostering innovation through user-centered and multidisciplinary collaboration. © 2024, The Authors. All rights reserved.

关键词： Product design

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Machine Learning-Enhanced Design of Lead-Free Halide Perovskite materials Using Density Functional Theory

arXiv

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arXiv 2024年

作者： Kumar, Upendra Kim, Hyeon Woo Maurya, Gyanendra Kumar Raj, Bincy Babu Singh, Sobhit Kushwaha, Ajay Kumar Cho, Sung Beom Ko, Hyunseok Jinju52851 Korea Republic of Department of Materials Science and Engineering Hanyang University Seoul04763 Korea Republic of Department of Physics GLA University Mathura281406 India School of Material Science and Engineering Pusan National University 2 Busandaehak-ro 63beon-gil Geumjeong-gu Busan46241 Korea Republic of Department of Mechanical Engineering The University of Rochester New York14611 United States Materials Science Program University of Rochester RochesterNY14627 United States Department of Metallurgy Engineering and Materials Science Indian Institute of Technology Indore Khandwa Road Simrol Indore453552 India Department of Energy Systems Research Ajou University Suwon16499 Korea Republic of

The investigation of emerging non-toxic perovskite materials has been undertaken to advance the fabrication of environmentally sustainable lead-free perovskite solar cells. This study introduces a machine learning methodology aimed at predicting innovative halide perovskite materials that hold promise for use in photovoltaic applications. The seven newly predicted materials are as follows: CsMnCl4, Rb3Mn2Cl9, Rb4MnCl6, Rb3MnCl5, RbMn2Cl7, RbMn4Cl9, and CsIn2Cl7. The predicted compounds are first screened using a machine learning approach, and their validity is subsequently verified through density functional theory calculations. CsMnCl4 is notable among them, displaying a bandgap of 1.37 eV, falling within the Shockley-Queisser limit, making it suitable for photovoltaic applications. Through the integration of machine learning and density functional theory, this study presents a methodology that is more effective and thorough for the discovery and design of materials. © 2024, CC BY.

关键词： Density functional theory

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